Microchip ATMEGA644A-MUR

AVR20MHz64KB（32K x 16）

Overview

• High-performance, Low-power AVR® 8-bit Microcontroller • Advanced RISC Architecture – 131 Powerful Instructions – MostSingle-clock Cycle Execution – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 20 MIPS Throughput at 20 MHz – On-chip 2-cycle Multiplier • Nonvolatile Program and Data Memories – 16/32/64K Bytes of In-System Self-Programmable Flash Endurance: 10,000 Write/Erase Cycles – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation – 512B/1K/2K Bytes EEPROM Endurance: 100,000 Write/Erase Cycles – 1/2/4K Bytes Internal SRAM – Programming Lock for Software Security • JTAG (IEEE std. 1149.1 Compliant) Interface – Boundary-scan Capabilities According to the JTAG Standard – Extensive On-chip Debug Support – Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface • Peripheral – Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode – Real Time Counter with Separate Oscillator – Six PWM Channels – 8-channel, 10-bit ADC Differential mode with selectable gain at 1x, 10x or 200x – Byte-oriented Two-wire Serial Interface – One/Two Programmable Serial USART (ATmega644, ATmega164/324) – Master/Slave SPI Serial Interface – Programmable Watchdog Timer with Separate On-chip Oscillator – On-chip Analog Comparator – Interrupt and Wake-up on Pin Change • Special Microcontroller – Power-on Reset and Programmable Brown-out Detection – Internal Calibrated RC Oscillator – External and Internal Interrupt Sources – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby • I/O and Packages – 32 Programmable I/O Lines – 40-pin PDIP, 44-lead TQFP, and 44-pad QFN/MLF • Operating Voltages – 1.8 - 5.5V for ATmega164/324/644V – 2.7 - 5.5V for ATmega164/324/644 • Speed Grades – ATmega164/324/644V: 0 - 4MHz @ 1.8 - 5.5V, 0 - 10MHz @ 2.7 - 5.5V – ATmega164/324/644: 0 - 10MHz @ 2.7 - 5.5V, 0 - 20MHz @ 4.5 - 5.5V • Power Consumption at 1 MHz, 3V, 25°C for ATmega644 – Active: 240 µA @ 1.8V, 1MHz – Power-down Mode: 0.1 µA @ 1.8V

Features

AVR® ATmega Series
44-VFQFN Exposed Pad package
Mounting type of Surface Mount

Surface Mount Mounting Type

Applications

There are a lot of Microchip Technology
ATMEGA644A-MUR Microcontroller applications.

• Radio
• Television
• Heater/Fan
• Calculator
• Kindle
• Christmas lights
• 3D printers
• Washing machine
• Microwave ovens
• Home appliances